: You can use plugins like SignTools 4 , selecting the Refine EH-721 as the output device. Quick Troubleshooting Tips
: Many users find success with the CH341SER driver, which can be found on sites like Driver Scape . Rohs 721 Cutting Plotter Driver Pc
for their USB connection. Without this, your computer will see the device as "Unknown" or assign it to an incorrect COM port. Download Source : You can download the standard CH340 Driver from WCH Gogo:Tronics Installation file and click Once finished, open Device Manager on your PC (right-click the Start menu). Look under Ports (COM & LPT) . You should see USB-SERIAL CH340 (COM X) : You can use plugins like SignTools 4